[PATCHv2 0/4] EDAC/altera: Address sashiko reviews part 1(v2)

[Dinh Nguyen <dinguyen@kernel.org>]

Hi EDAC maintainers,

This is version 2 of the patch series that addresses some of the sashiko
reviews for the Altera EDAC driver.

I apologize for the lateness of this series, but I do believe these 4
patches are important enough to be included in v7.2 because they are
confirmed bug hits.

patch 1/4 : EDAC/altera: Add suppress_bind_attrs so driver cannot get unbound
While sashiko did not flag this specific feature of the driver, the
reviews caused me to look at the bind/unbind feature of this driver. The
unbind/bind feature will absolutely cause a system to crash because
during the bind, the driver sets a bit to clear the memory. We
absolutely cannot do this on a running system.

patch 2/4 : EDAC/altera: Drop __init from ECC setup paths for re-probe safety
For all the different child nodes of the main EDAC module, there is a
chance for deferred probing. If EPROBE_DEFER occurs, and these functions
that are marked with __init will be freed.

patch 3/4 : EDAC/altera: Fix code leak on dci allocation failure
The dci data structure is leaked if a devres_open_group() fails.

patch 4/4 : EDAC/altera: Fix use-after-free in error paths
The dci structure cannot be freed before the unregistering of the
interrupts.


Dinh Nguyen (4):
  EDAC/altera: Add suppress_bind_attrs so driver cannot get unbound
  EDAC/altera: Drop __init from ECC setup paths for re-probe safety
  EDAC/altera: Fix code leak on dci allocation failure
  EDAC/altera: Fix use-after-free in error paths

 drivers/edac/altera_edac.c | 60 ++++++++++++++++++--------------------
 1 file changed, 29 insertions(+), 31 deletions(-)

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2.42.0.411.g813d9a9188